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NeXtMidas Training
Working with Files
Basic File Commands
STATUS - Listing file headers
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- The
STATUS Command:
- The
STATUS command is used to show details about a file
- For Midas (Blue) files,
STATUS shows information in the Blue header.
nM> status apenny.prm
DataFile (BLUE) : file:/home/burdell/nxm230/nxm/sys/dat/apenny.prm
Data Rep (H/D) : EEEI / EEEI
Number of Elements : 128.0
File Type : 2000
Data Format : SB - Scalar Byte
Write Protect : false
Abscissa units : No applicable units (U)
Abscissa start : 0.0
Abscissa delta : 1.0
Frame Length : 128
Secondary units : No applicable units (U)
Secondary start : 0.0
Secondary delta : 1.0
- For other file types,
STATUS shows generally useful information like:
- The number of bytes in the file (XML or TXT files)
- That particular file type's header information (JPEG or SHP)
- In general, any file type whose file handler subclasses
BaseFile and
can be STATUS ed.
nM> status airports.csv{headerrows=1}
CsvFile : file:/home/burdell/nxm230/nxm/sys/dat/airports.csv
Rows : 726
Columns : 4
Header : First Row
Column Name=AIRPORT_NAME Format=??
Column Name=CODE Format=??
Column Name=LATITUDE Format=??
Column Name=LONGITUDE Format=??
- The
/KEY or /K switch can be used to show the Midas keywords.
- The
/DATA= or /D=<num_elements> switch can be used to show the data in the file (by running DATALIST).
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